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Chaos Corona for 3ds Max => [Max] General Discussion => Topic started by: matteosperi on 2024-11-20, 16:37:14

Title: V12 Update 1
Post by: matteosperi on 2024-11-20, 16:37:14

Hi,
I have installed V.12 update 1.
I have a slowdown with lag with VFB interactive render.
Is it just my problem?
When VFB is open, I have a strong lag with the region render, when I turn lights on and off with lightmix and also when modifying materials.
The scene is very small (19 mb) and with version 12 everything was faster.
Thanks
Matteo

Title: Re: V12 Update 1
Post by: apathy on 2024-11-20, 19:35:08

I have this problem too.
When interactive rendering in viewport is enabled I can't even enter map settings in the editor.
It goes back to normal when interactive rendering is turned off.

Title: Re: V12 Update 1
Post by: _fosafosa on 2024-11-20, 20:47:21

i changed IR threads to -4 and its OK.

Title: Re: V12 Update 1
Post by: apathy on 2024-11-21, 10:45:37

Yes I tried that and it seems to be working better now, thank you.

Title: Re: V12 Update 1
Post by: matteosperi on 2024-11-21, 15:47:42

hi, thanks for the advice;
I tried this method in:  system settings, IR, of threads override = -4
As per photo, is it correct?
I don't understand what it's for, but with the same scene I can manage VFB and material editor much better; the lags have decreased
Matteo

Title: Re: V12 Update 1
Post by: TomG on 2024-11-21, 17:04:08

That setting with a negative number lets you specify that Corona should not use a certain number of threads on your CPU, in this case let's say you have 32 threads, you are saying "Corona, you have to leave 4 threads free for Max and Windows and everything else on the system", so Corona would only use 28 threads.

You can put in a positive number too, e.g. if the above was true with 32 threads, entering 28 into that parameter does the same thing, saying "Corona, you can only have 28 threads, anything else is left for Max, Windows, and everything else" (in this case, leaving them 4 threads).

Put 0 in there, and you are saying "Corona, you can have  all the threads."

It only applies during IR. There is another parameter that follows the same approach for what happens during final rendering.

PS the default is -1 for IR and usually works fine (in fact I often set mine to 0 and the system remains responsive). The default for final rendering is 0, Corona uses everything then.

Title: Re: V12 Update 1
Post by: matteosperi on 2024-11-21, 17:24:35

hi Tom, thanks the explanation is very useful;
I will try with various settings, all this changes a lot the speed of managing projects with VFB active.
Matteo